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Finding the Fourth Proportional to 28,932.37, 43,398.92 and 9,210.85

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Solution

The fourth proportional to 28,932.37, 43,398.92 and 9,210.85 is: 13,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.37 : 43,398.92 = 9,210.85 : x
  2. Step 2: Convert to fraction form
    28,932.37/43,398.92 = 9,210.85/x
  3. Step 3: Cross multiply
    28,932.37x = 43,398.92 × 9,210.85
  4. Step 4: Simplify right side
    28,932.37x = 399,740,942.28
  5. Step 5: Solve for x
    x = 399,740,942.28/28,932.37
  6. Step 6: Final answer
    x = 13,816.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.